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Rectifier For Cathodic Electro Deposition CED Coating
www.gprectifier.com
Introduction of CED Coating
Green Power is an international professional rectifier manufacturer with more than 20 years experience, the designed and manufactured transformer & rectifier systems for CED coating have the advantages of high reliability, high efficiency, high accuacy, high stability, low ripple & intelligent digital control etc.
Electrocoating, which is also referred to as electro deposition, electrophoretic deposition, CED Coating, CED Painting or electropainting, is an organic finishing process that uniformly applies thin-film primers and one-coat finishes to metallic substrates.CED coating is used extensively in the automotive industry. In this process, the component after phosphate pre-treatment is dipped in the bath of E-coat chemicals and given an electric charge. The coating gets deposited on the component and then it is removed from the bath, washed and then baked.
This technology gives an organic finish on metal part/component by electrically depositing paint on it. Cathodic electrocoating are high performance coatings and can withstand the harshness of exterior environment.
Green Power Provides the DC Power Supply for CED Coating
Same level of reliability
ü The quality is same level by using IGBT rectifier as conventional SCR rectifier.
Higher power factor in the whole range
Lower output ripple
Modular design
ü In case of one module is faulty, stop working won't affect other modules continue
running and keep continuous operation of CED coating process
ü Not affected by input voltage fluctuation
ü Higher efficiency
ü High regulation accuracy
ü Fast response time
ü Wide output voltage range
Power saving
ü Through IGBT PWM technology, rectifier conversion efficiency is much higher
than conventional SCR rectifier, thus saving power of user dramatically.
IGBT Rectifier Advantages Over SCR Rectifier
AC/DC Rectifier Solutions Comparison
Rectifier Types Thyristor rectifier IGBT switch mode rectifier Chopper Rectifier
Topology Three phase bridge
IGBT modular structure, AC-DC-AC-DC circuit, high frequency transformer
Line frequency transformer+Chopper module
Working principle Thyristor phase shift IGBT PWM IGBT chopper
Efficiency(depends on output voltage)
About 90% at rated output for 100V
About 95% at rated output for 100V
About 95% at rated output for 100V
Power factor when not working at rated voltage
Lower Higher, ≥0.93 Higher, ≥0.93
Semiconductor device Thyristor IGBT IGBT
Parallelability (multi-tower) Difficult Easy Easy
Modular structure No Yes Yes
Partial output possibility
No, when rectifier has problem, the whole rectifier will stop working
Yes, when one module have problem, remained modules could continue working
Yes, when one module have problem, remained modules could continue working
Size(depends of power) Biggest Smallest Medium
We can provide below 3 solutions of Rectifiers
GP DC Power Supply Advantages• DSP digital control, USA TI company's DSP chip
• High reliability, 24 hours continuous running
• Modular, small size
• High efficiency
• Integration process curve
• Ramp Timer setting
• Soft start function
• Rich external interfaces
• Automatic restart function
• Historical data, curves
• Touch Panel HMI
Benefit to User uHigh Power Rectifiers ensure your process operating under all conditions
uHigh performance – the base for your productivity:
− High Reliability: every measure to ensure the reliability of the system
− Power Saving: optimized design to get maximized efficiency
− High accuracy DC output current control
− Low output ripple
− High power factor
− Friendly HMI
uLowest total cost:
− Maximized availability
− Maximized electrical efficiency
− Minimized maintenance
− Highest personnel safety
− Longest lifetime: properly maintained rectifier system can last more than 25 years
− Shortest installation and commissioning
uSmart digital control for immunity to interference, good automatic control system, for your easy operation and control
uLife cycle service – for customer satisfaction: technical training, local service, always online
Main Specifications of IGBT Switch Mode RectifierType IGBT High Frequency Switch Mode Rectifier
Structure Modular design
Working duty 100% 24 hours continuous running
Input voltage 220V/380/415V/480V AC ±10% 3 phase 4 line, 50-60Hz
Rated output voltage Custom design
Rated output current Custom design
Output range 0-100%
Control Accuracy ≤0.5%
Power factor ≥0.94
Efficiency typical 90% at rated output
Current ripple <5% at rated output，low ripple in whole range
Control mode constant current/constant voltage
Cooling Air cooling or water cooling
Protection class IP32 for Air cooling，IP44 for Water cooling
Insulation grade B
HMI Touch Panel on control box
Remote control interface Standard RS485, Profibus, Profinet, 0-10V/4-20mA available
Alarm type Audible and visual alarm
ProtectionsOutput overcurrent protection
Over heat protection
IGBT Driving protection
Features
Digital DSP control(USA TI DSP Chip)
History date record function
Waveform function
History protection record function
Timer
Anticorrosion treatment
Ambient temp Max. 40℃, derated operation up to 50℃
Altitude ≤2000m altitude. De-rated operation if higher
E-Coating Rectifiers Reference Pictures
Company Introduction• High-tech enterprises, more than 20 years of experience in R&D and engineering
of power electronics products
• Strong technical strength, 6 doctors, 20 masters
• More than 30 patents and software copyrights
• Exported to more than 40 countries and regions such as the United States and
Canada, and established agencies in more than 10 countries
• Products through the United States UL, Canada CSA, European CE certification
• Passed ISO9001:2015 Quality Management System Certification
• 16,000 square meters clean workshop
Factory photo
Global CooperationInternational sales network
UL certification CE certification ISO9001certification
Certification
Service Commitment• The company has established a complete service system: including pre-
sale, sales and after-sales service• Adhering to the customer-oriented service spirit• Provide professional customized solutions for customer needs• Equipped with senior engineer to provide professional technical support• Provide spare parts• Respond within two hours of receiving customer feedback and arrive 24
hours• One year warranty• Lifelong maintenance• 24-hour service hotline
Green Power Co., Ltd.Email: [email protected]/Whatsapp: +86 18500983665 +86 13810151476Website: www.gprectifier.com
